Fix minor spelling mistakes in tests/cmocka/* Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

Rename dp_backend.h to backend.h Reviewed-by: Sumit Bose <sbose@redhat.com> Reviewed-by: Jakub Hrozek <jhrozek@redhat.com> Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

tests: Move named_domain from test_utils to common test code This handy function should be reused by other parts of the code. Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

DP: Provide a way to mark subdomain as disabled and auto-enable it later with offline_timeout https://fedorahosted.org/sssd/ticket/2637 Adds a new Data Provider function be_mark_dom_offline() that is a replacement for be_mark_offline(). When called, the function would either set the whole back end offline, just like be_mark_offline or just set the subdomain status to inactive. When a subdomain is inactive, there is a singleton timed task that would re-set the subdomin after offline_timeout seconds. Reviewed-by: Pavel Březina <pbrezina@redhat.com>